I feel the Kings of Speed upmix doesn't work as well I'm sorry to say. It is a bit disapointing to end experiencing the 5.1 mix on this note.
But, eh, what can you do when the multitracks are missing?
No it doesn't, but then again, I feel that the track is one of the weakest compositionally and mix-wise on the album so it doesn't surprise me that the upmix didn't come out as well either.
What can you do when the multitracks are missing? Well if anywhere from 1/2-2/3 of the multis are missing, then obviously the album can't be released in 5.1, but with albums like "Aja" (where 5/7 tracks are available) and "Who's Next" (where 6/9 tracks are available), I wouldn't mind the other missing tracks being upmixed. It's better than nothing, right?! (which is what we currently have)